Yahoo Groups archive

Digital BW, The Print

Index last updated: 2026-04-28 22:56 UTC

Message

Re: Deep blacks seem reflective when viewed from side (UT-RC and Epson R280)

2009-12-30 by acevbolt

Hi Paul,

Thanks for the suggestions

>I'm curious if when you print a 90-100% test strip --  If you have a flatbed, use black paper around the test strip to reduce flare.
> 

Visually, there was sharp jump from the 99% patch to the 100% patch when viewed at an angle(the 100% looking really really black and shiny)

I did a quick flatbed scan(can't access my gray card at this very moment), and sampled the L-values in each patch(5pixel average dropper).
From 90-100% I got the following numbers:

24,21,20,18,16,16,14,14,10,10,14 


> 
> In general, I do sometimes see a 100% black that is just too shiny relative to the 95% patch.  Using gloss optimizer or a spray can take care of it, but that is a nuisance.  See on the 90-100 test strip one of the patches below 100% looks better and still has a sufficient depth of black.  If so, it's easy to make a curve that will take care of the problem.
> 

From here I'm not sure how to make the curve. I do have access to a gray card for future work.


Thanks, 

Gabe

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.